title: Resolution and quantification of isomeric fatty acids by silver ion HPLC: fatty acid composition of aniseed oil (Pimpinella anisum, Apiaceae).
abstract: A silver ion HPLC procedure is described that is suitable to determine the fatty acid composition of plant seed oils. After conversion of fatty acids to p-methoxyphenacyl derivatives, it was possible to achieve baseline resolution of all fatty acid components with 0 to 3 double bonds, including the positionally isomeric 18:1 fatty acids oleic acid (cis 9-18:1), petroselinic acid (cis 6-18:1), and cis-vaccenic acid (cis 11-18:1), in aniseed oil (Pimpinella anisum, Apiaceae) by a single gradient run on a single cation exchange column laboratory converted to the silver ion form. The UV detector response (280 nm) was linearly related to the fatty acid concentration in the range 0.01 to 3.5 mg/mL.
authors.affiliation: Bulgarian Academy of Sciences, Institute of Organic Chemistry with Center of Phytochemistry, Acad. G. Bontchev St, bl. 9, Sofia 1113, Bulgaria.
authors.forename: Roumen V
authors.initials: RV
authors.lastname: Denev
authors.forename: Ivalina S
authors.initials: IS
authors.lastname: Kuzmanova
authors.forename: Svetlana M
authors.initials: SM
authors.lastname: Momchilova
authors.forename: Boryana M
authors.initials: BM
authors.lastname: Nikolova-Damyanova
mesh_terms: D002849:Chromatography, Gas; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D005227:Fatty Acids / Q000032:analysis* / Q000737:chemistry; D007536:Isomerism; D028042:Pimpinella / Q000737:chemistry*; D010938:Plant Oils / Q000737:chemistry*; D012639:Seeds / Q000737:chemistry; D012834:Silver; D013056:Spectrophotometry, Ultraviolet
chemical_list: D005227:Fatty Acids; D010938:Plant Oils; D012834:Silver